Speaker Connections; Troubleshooting - JBL RM10 Owner's Manual

SPEAKER CONNECTIONS

CONNECTION TIPS
Speakers and electronics
have corresponding positive
(+) and negative (–) terminals.
It is important to connect both
speakers identically: positive
(+) on the speaker to positive
(+) on the amplifier and nega-
tive (–) on the speaker to neg-
ative (–) on the amplifier.
Wiring "out of phase" results
in thin sound, weak bass and
a poor stereo image when
two speakers are used.
To use the binding-post
speaker terminals, unscrew
the colored collar until the
pass-through hole in the
TRIM CONTROLS
The RM10 monitor is equipped
with left and right high-fre-
quency trim controls that con-
trol the tweeters in the left
and right side panels of each
RM10 speaker. The trim con-
trols enable you to compen-

TROUBLESHOOTING

If there is no sound
from any of the
speakers:
• Check that receiver/ampli-
fier is on and that a source is
playing.
• Review proper operation of
your receiver/amplifier.
If there is no sound
coming from one
speaker:
• Check the "Balance" control
on your receiver/amplifier.
• Check all wires and connec-
tions between receiver/ampli-
fier and speakers. Make sure
no wires are touching other
wires or terminals and creat-
ing a short circuit.
• Make sure all wires are
connected. Make sure none
of the speaker wires are
frayed, cut or punctured.
center post is visible under
the collar. Insert the bare end
of the wire through this hole;
then screw the collar down
until the connection is tight.
The hole in the center of each
collar is intended for use with
banana-type connectors. To
comply with European CE
certification, these holes are
blocked with plastic inserts at
the point of manufacture. To
use banana-type connectors
requires the removal of the
inserts. Do not remove these
inserts if you are using the
product in an area covered by
the European CE certification.
sate for various room condi-
tions and vocal styles. Begin
by turning the knobs in the
center of each control as far
counterclockwise as they will
go. This is the normal level of
the associated high-frequency
• Turn off all electronics
and switch the speaker in
question with one of the other
speakers that is working cor-
rectly. Turn everything back
on and determine whether the
problem has followed the
speaker, or has remained in
the same channel. If the prob-
lem is in the same channel,
the source of the problem is
most likely with your receiver/
amplifier, and you should
consult the owner's manual
for that product for further
information. If the problem
has followed the speaker,
consult your dealer for further
assistance or, if that is not
possible, visit www.jbl.com
for further information.
If the system plays at
low volumes but shuts
When Two RM10's
Are Used
RIGHT
– +
– + –
LEFT
RIGHT
Receiver or Amplifier Speaker Outputs
When One RM10 Is
Used
–
– +
Receiver or Amplifier
Speaker Outputs
driver. Turning the knob clock-
wise decreases the driver's
level. Adjust the trim controls
so that the vocals are loud
enough to be intelligible with-
out being so loud as to be
harsh or distorted.
off as volume is
increased:
• Check all wires and connec-
tions between receiver/
amplifier and speakers.
• Make sure all wires are
connected. Make sure none
of the speaker wires are
frayed, cut or punctured.
• If more than one pair of
main speakers is being used,
check the minimum imped-
ance requirements of your
receiver/amplifier.
If there is no (or low)
bass output:
• Make sure the polarities
(+ and –) of the left and right
"Speaker Inputs" are con-
nected properly.
• Consider adding a powered
subwoofer to your system.
LEFT
– +
+
+